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Tire Mounting: The Right Way to Mount a Tire
Before Mounting
Check rim components for cracks. Replace all cracked, badly worn, damaged and severely rusted components with new parts of the same size and type. When a components is in doubt, replace it. (Parts that are cracked, damage or excessively corroded are weakened. Bent or repaired parts may not engage properly.)
Do not, under any circumstance, attempt to rework, weld, heat or braze any rim component that is cracked, broken or damaged. Replace with a new part that is not cracked, broken or damaged and which is of the same size and type. (Heating may weaken a part to extent that it is unable to withstand forces of inflation or operation.)
Check type of rim and make sure all parts of such rim are being assembled properly. Follow instruction manual of rim or ask your distributor if you have any doubts.(Mismatched parts may appear to fit, but when the tire is inflated they may fly apart with explosive force.)
Mixing parts of one type rim with those of another is potentially dangerous. Always check rim with manufacturer for approval.
Remove rust, dirt and other foreign matter from the rim surface, particularly on the bead seats and O-ring slot.
Clean the inside of the tire.
Make sure tube and flap are correct and not damaged for tube type tires. Always prepare a new O-ring for tubeless tires.
Do not reinflate a tire that has been run flat or has been run at 80% or less of its recommended operating pressure, or when there is obvious or suspected damage to the tire or wheel components. (Components may have been damaged or dislocated during the time the tire was run flat or seriously underinflated.)
During Mounting and Inflation
Do not try to seat rings or other components by hammering while tire is inflated or partially inflated.
Double check to make sure all components are properly seated prior to inflation.
Do not inflate tire before all components are properly in place. Place in safety cage or use a restraining device and inflate to approximately 0.35 kg/cm2 (5 psi), recheck components for proper assembly. Observe that O-ring does not roll out of its groove. If assembly is not performed properly, deflate and correct. Never hammer on an inflated on partially inflated tire/rim assembly. If assembly is correct at approximately 0.35 kg/cm2 (5 psi), continue to inflate fully to seat the tire beads.
Never sit or stand in front of a tire and rim assembly that is being inflated. Always use a clip on chuck with a sufficient length of hose to permit the person inflating the tire to stand clear of the potential trajectory of the wheel components, and use an in-line valve with gauge or a pressure regulator preset to a desired value when inflating a tire. When a tire is in a restraining device, do not lean any part of your body or equipment on or against the restraining device. (If parts are improperly installed they may fly apart with explosive force.)
Never attempt to weld on an inflated tire/rim assembly or on a rim assembly with a deflated tire. (Heat from welding will cause a sudden, drastic increase in pressure, resulting in an explosion with the force of a bomb. Deflated tires can catch fire inside the air chamber.)
After Inflation
Make sure no air leakage can be suspected, especially in tubeless tires.